Tag: Linux

A new Linux rootkit malware called Pumakit has been discovered that uses stealth and advanced privilege escalation techniques to hide its presence on systems. The malware is a multi-component set that includes a dropper, memory-resident executables, a kernel module rootkit, and a shared object (SO) userland rootkit. Elastic Security discovered Pumakit in a suspicious binary […]

The first UEFI bootkit specifically targeting Linux systems has been discovered, marking a shift in stealthy and hard-to-remove bootkit threats that previously focused on Windows. Named ‘Bootkitty,’ the Linux malware is a proof-of-concept that works only on some Ubuntu versions and configurations rather than a fully fledged threat deployed in actual attacks. Bootkits are malware […]

North Korean hackers are using a new Linux variant of the FASTCash malware to infect the payment switch systems of financial institutions and perform unauthorized cash withdrawals. Previous variants of FASTCash targeted Windows and IBM AIX (Unix) systems, but a new report by security researcher HaxRob reveals a previously undetected Linux version that targets Ubuntu […]

Under certain conditions, attackers can chain a set of vulnerabilities in multiple components of the CUPS open-source printing system to execute arbitrary code remotely on vulnerable machines. Tracked as CVE-2024-47076 (libcupsfilters), CVE-2024-47175 (libppd), CVE-2024-47176 (cups-browsed) and CVE-2024-47177 (cups-filters) and discovered by Simone Margaritelli, these security flaws don’t affect systems in their default configuration. CUPS (short […]

An affiliate of the Mallox ransomware operation, also known as TargetCompany, was spotted using a slightly modified version of the Kryptina ransomware to attack Linux systems. This version, according to SentinelLabs, is separate from other Linux-targeting variants of Mallox, such as the one described last June by Trend Micro researchers, highlighting the shifting tactics of the […]

A stealthy Linux malware named ‘sedexp’ has been evading detection since 2022 by using a persistence technique not yet included in the MITRE ATT&CK framework. The malware was discovered by risk management firm Stroz Friedberg, an Aon Insurance company, and enables its operators to create reverse shells for remote access and to further the the […]